Plenty of our childhoods had at least one math teacher who made the (ultimately erroneous) claim that we needed to learn to do math because we wouldn’t always have a calculator in our ...

Geoff Williams is a journalist and author. His byline has appeared in numerous publications, including U.S. News & World Report, Yahoo Finance, Entertainment Weekly, The Washington Post, LIFE magazine ...

Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Godox iT32 and X5S & N review. A compact modular TTL flash system with HSS, wireless control, pros, cons, and real-world performance.